Plaid Cymru was formed in 1925 and won its first seat in 1966. Plaid Cymru by 2012 had 1 of 4 Welsh seats in the European Parliament, 3 of 40 Welsh seats in the Parliament of the United Kingdom, 11 of 60 seats in the National Assembly for Wales, and 206 of 1,264 principal local authority councillors. Plaid is a member of the European Free Alliance.